Inertial Frames of Reference

• What is the term used in Physics to clarify points of view?

  Relative
• How does the velocity of a car differ based on the observer?

  It varies between stationary and moving observers
• What defines a reference frame?

  A set of coordinates for position and time
• How does one perceive their reference frame while sitting still?

  They feel stationary despite Earth's movement
• What is the perspective of a reference frame?

  Where an object is at rest
• How do two observers perceive a moving train differently?

  One sees the train moving left, the other right

  
• What do Person A and Person B perceive while the train moves?

  • Person A sees Person B moving right
  • Person B sees Person A moving right
  • Both consider themselves stationary
• What is an inertial reference frame?

  A non-accelerating reference frame
• How do inertial reference frames relate to each other?

  They move at constant velocity with respect to each other
• Is there an absolute reference frame in the Universe?

  No, everything is moving relative to everything else
• What speed does the aunt estimate the students cycling to be?

  5 m/s
• What speed would the friend measure the student to be traveling?

  0 m/s
• What should you look for in exam questions regarding reference frames?

  • Terms like 'for the reference frame of...'
  • Understand the observer's point of view
  • Important for special relativity
• Will non-inertial reference frames appear in exams?

  No, they will not appear